Yeah, MCOLE is way out of date, arch-based distributions suffer from issues when you go too long without updating them and it's several years old now. I would suggest the newest manjaro xfce and then theming it up, I know Spatry was having issues with the Manjaro tools toward the end and was talking about just making his changes available in a repository. Unfortunately if he did that it would still be years out of date.
The other option would be the MM re-roll of mcole but even it might end up being somewhat out of date. I never had a lot of luck testing it myself, it didn't seem to like virtualbox very much.